wow, moves quite fast as well ... could it possibly be another sattalite? it has to be close to the recording device... or REALLY fast (i think .. im
no orbital master)
Cosmic rays are very high energy particles which come from a variety of sources (e.g. solar flares, supernovae). They are of interest to lots of astronomers, but mostly just noise for us. We see lots of them in every image and occasionally, 3 or 4 of them hit the CCD in just the right places in consecutive images to fool us into believing there is a real object there.